PDF Morphology faunas and genesis of Ordovician
A Relatively undistorted burrows in grainstone; Kirkfield quarry B Undistorted dwelling burrows near top pass down into distorted compacted burrows along which later stylolitization has taken place; Edrioasteroid bed Kirkfield quarry C Progressive compaction of feeding burrows below hardground surface; Edrioasteroid bed Kirkfield quarry